A faint \(I_{\rm 170}=4\) MJysr\(^{-1}\) bipolar globule was discovered with the ISOPHOT 170 \(\mu\)m Serendipity Survey (ISOSS). ISOSS J 20246+6541 is a cold (\(T_{\rm d}\approx 14.5\) K) FIR source ...without an IRAS pointsource counterpart. In the Digitized Sky Survey B band it is seen as a 3\arcmin size bipolar nebulosity with an average excess surface brightness of \(\approx 26\) mag/\(\square \)\arcsec . The CO column density distribution determined by multi-isotopic, multi-level CO measurements with the IRAM-30m telescope agrees well with the optical appearance. An average hydrogen column density of \(\approx 10^{21}\)cm\(^{-2}\) was derived from both the FIR and CO data. Using a kinematic distance estimate of 400 pc the NLTE modelling of the CO, HCO\(^+\), and CS measurements gives a peak density of \(\approx 10^4\)cm\(^{-3}\). The multiwavelength data characterise ISOSS 20246+6541 as a representative of a class of globules which has not been discovered so far due to their small angular size and low 100\(\mu \)m brightness. A significant overabundance of \(^{13}\)CO is found \(X(^{13}CO) \ge 150\times X(C^{18}O)\). This is likely due to isotope selective chemical processes.
GPS-based bathymetric mapping with fish finder Toth, L.(Debreceni Egyetem, Debrecen (Hungary) Mgtudomanyi Kar, viz- es Kornyezetgazd. Tanszek); Stundl, L.(Debreceni Egyetem, Debrecen (Hungary) Allattenyesztes- es Takarmanyozastani Tanszek); Lenart, Cs.(Debreceni Egyetem, Debrecen (Hungary) Mgtudomanyi Kar, Viz- es Kornyezetgazd. Tanszek) ...
Fisheries Development Hungary,
2001, Volume:
26
Journal Article
The fish stock and physical and biological parameters of natural waters are less known, thus newer or more precise data would help the management and decision making process. The IT equipment used in ...marine environment is not widely used in Hungary due to obvious limitations (depth requirement, pricem etc.). In order to eliminate these drawbacks a technical apparatus has been put together which fits the domestic circumstances. Its principle is that the GPS provide the latitude-longitude data, while the fishfinder provide the bathymetric data. The recording of the rearings in done with the help of a special Windows-based software developed by us and capable of integrating and continously downloading data in NMEA 0183 format. The data then can easly be transformed and presented in GIS environment.
